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Tanguy, F., Gaubicher, J. & Guyomard, D. (2010) Capacity fading on cycling nano size grains of Li1.1V3O8, electrochemical investigation. Electrochim. Acta, 55 3979–3986. 
Added by: Laurent Cournède (2016-03-10 21:37:32)
Type de référence: Article
DOI: 10.1016/j.electacta.2009.12.038
Numéro d'identification (ISBN etc.): 0013-4686
Clé BibTeX: Tanguy2010
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Catégories: ST2E
Mots-clés: Capacity fading, Cathodes, cells, Electrode, Electrolyte decomposition layer, improvement, In operando XRD, insertion, li1+alpha-v3o8, Lithium-ion batteries, liv3o8, Nanograins, performance, sol-gel synthesis, temperature
Créateurs: Gaubicher, Guyomard, Tanguy
Collection: Electrochim. Acta
Consultations : 6/678
Indice de consultation : 3%
Indice de popularité : 0.75%
Résumé     
The electrochemical characterization related to the capacity fading of Li1.1V3O8 nano grains has been investigated. It reveals that capacity loss is associated to the use of liquid electrolyte and that it mainly stems from the active material irrespective of the nature of the liquid electrolyte, the water content, synthesis routes and the positive electrode chemistry. SEM and in operando XRD experiments allow elucidating undergoing physical processes. A film forms from electrolyte decomposition on the surface of the electrode and progressively propagates on cycling through the electrode thickness. Embedded grains become either less or none electrochemically reactive. In the former case, embedded grains give rise to strongly polarized and energetically less favored processes. In the latter case the capacity is not accessible anymore within the potential range resulting in capacity fading. (C) 2009 Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède  
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